吸附
活性炭
甲醇
电化学
化学
苯
茴香醚
化学工程
材料科学
制浆造纸工业
催化作用
有机化学
电极
工程类
物理化学
作者
Rodrigo de Mello,Artur J. Motheo,Cristina Sáez,Manuel A. Rodrigo
标识
DOI:10.1016/j.electacta.2022.140681
摘要
One of the impacts caused by the increase in anthropogenic activities, related to the accelerated urbanization and industrialization, is the increase in emissions of volatile organic compounds (VOC). This type of air pollution has become a matter of great concern nowadays, because of its harmfulness to the environment and human health. Adsorption technologies are one of the most promising methods for decontaminating VOCs from the air because they are simple, inexpensive, and energy efficient. On the other hand, electrochemical treatments have been extensively and successfully studied for water treatment. The combination of an adsorption step followed by an electrochemical treatment, with the regeneration of the adsorbent material, can be an interesting alternative, mainly to overcome the limitations of the treatment of diluted solutions. In this work, the removal of benzene from diluted water solutions were evaluated using a combination of three processes: adsorption, desorption with methanol and electrochemical oxidation with boron-doped diamond electrode (BDD) of the high concentrated solution obtained. This technology is suitable for the recovery of the adsorbent material (granular activated carbon), which can be reused after drying. Two possible concurrent ways to remove benzene from methanol solutions by electrochemical oxidation were found: (1) mineralization and (2) conversion to anisole, a solvent of commercial interest used in the cosmetics industry. The performance of electrochemical treatment for benzene removal from methanol solution was not so different than that in water, but the energy consumption was greater. However, the production of high added-value products is a very interesting finding that will advance the development of more sustainable treatment processes.
科研通智能强力驱动
Strongly Powered by AbleSci AI